diff --git a/epan/dissectors/packet-ged125.c b/epan/dissectors/packet-ged125.c
index 6939c2621a..7a70de8c7c 100644
--- a/epan/dissectors/packet-ged125.c
+++ b/epan/dissectors/packet-ged125.c
@@ -1436,7 +1436,7 @@ proto_register_ged125 (void)
 
 		{ &hf_ged125_TrunkNumber,
 		  { "Trunk Number", "ged125.trunk_number",
-			FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
+			FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
 
 		{ &hf_ged125_TrunkStatus,
 		  { "Trunk Status", "ged125.trunk_status",
diff --git a/epan/dissectors/packet-hiqnet.c b/epan/dissectors/packet-hiqnet.c
index a3449e4a18..9bd7561445 100644
--- a/epan/dissectors/packet-hiqnet.c
+++ b/epan/dissectors/packet-hiqnet.c
@@ -1137,7 +1137,7 @@ proto_register_hiqnet(void)
         },
         { &hf_hiqnet_sourcedev,
             { "Source device", "hiqnet.srcdev",
-                FT_UINT8, BASE_DEC_HEX,
+                FT_UINT16, BASE_DEC_HEX,
                 NULL, 0x0,
                 NULL, HFILL }
         },
@@ -1149,7 +1149,7 @@ proto_register_hiqnet(void)
         },
         { &hf_hiqnet_destdev,
             { "Destination device", "hiqnet.dstdev",
-                FT_UINT8, BASE_DEC_HEX,
+                FT_UINT16, BASE_DEC_HEX,
                 NULL, 0x0,
                 NULL, HFILL }
         },
diff --git a/epan/dissectors/packet-mpeg-descriptor.c b/epan/dissectors/packet-mpeg-descriptor.c
index af09a21a7d..ed36a744da 100644
--- a/epan/dissectors/packet-mpeg-descriptor.c
+++ b/epan/dissectors/packet-mpeg-descriptor.c
@@ -2211,7 +2211,7 @@ proto_mpeg_descriptor_dissect_app_sig(tvbuff_t *tvb, guint offset, guint len, pr
     while ((offset - offset_start) < len) {
         proto_tree_add_item(tree, hf_mpeg_descr_app_sig_app_type, tvb, offset, 2, ENC_BIG_ENDIAN);
         offset += 2;
-        proto_tree_add_item(tree, hf_mpeg_descr_app_sig_ait_ver, tvb, offset, 2, ENC_BIG_ENDIAN);
+        proto_tree_add_item(tree, hf_mpeg_descr_app_sig_ait_ver, tvb, offset, 1, ENC_BIG_ENDIAN);
         offset += 1;
     }
 }